Authors - Reena Pal, Premal Patel Abstract - The quantum computing potential to transform the conventional public key cryptosystems, specifically when they are being implemented on the structure of a cloud, and are operating on sensitive data is especially problematic. In the current paper, we introduce quantumresistant, fully homomorphic encryption (FHE) new homomorphic encryption scheme, to offer secure and scalable cloud data encryption. We solve Learning With Errors (LWE) problems and Ring-LWE problems and include dynamic key management and re encryption protocols to improve better security of multi-users [14]. The results of our Largescale simulations on a cloud testbed show that our design actually has the desired throughput and resource efficiency under horizontal scaling [10] although 60-70% addition of additional latency is noticeable as compared to non-BFT systems. Key to Practicality The paper will offer the much-needed trade-offs of high performance and high security assurances [12].
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